140 NEOTROPICAL PSELAPHIDAE 



Group XVII 



There is but one species in this group. Antennae slender, with a two- 

 segmented club, segment VII subquadrate; VIII subquadrate, slightly trans- 

 verse; IX quadrate; X large, twice the size of ninth, subovate; XI moderate 

 in size in comparison to the eleventh segment of many other species, briefly 

 fusiform. Basal discal carinae of first tergite including one-third of segmental 

 width. Metasternum obsoletely, medianly carinate. Last sternite slightly im- 

 pressed, with apical margin medianly obtusely, triangularly produced, with 

 a slight sinuation on each side. 1.6 mm. The elytra are distinctive, being 

 cribrately, rugosely punctate. Known only from the male sex. 



curvipes Raffray. 1904. Brazil. 



Group XX 



Antennal segments I and II elongate, cylindrical; III obconical; male 

 with metasternum widely impressed and last sternite large, strongly 

 oblique laterallj^, medianly truncate and with a subovate, distinctive 

 and large impression; the middle trochanters each with a small, 

 obtuse tooth; 1.8 mm. long irrita 



Antennal segments I and II not elongate-cylindrical; male secondary 

 sexual characters (where known) not as above 2 



2. Antennal segment I quadrate; II ovate; III minute and briefly ob- 



conical; IV twice as long as third; V cylindrical, slightly wider than 

 fourth and much longer; VI much larger than fifth; VIII strongly 

 quadrate; IX large, truncate, obconical; X similar to ninth but 

 larger; XI moderate in size, ovate, truncate at base and acuminate 

 at apex; basal carinae of first tergite only including one-fourth of the 

 discal width. Known only from the female; 1.6 mm luteola 



(When the male is found it may prove to have abnormal antennae 

 especially since the third segment of the female is rather excep- 

 tional; if this proves to be the case this species will go to another 

 group of the genus) 



Antennal segment I large; II narrower and subcylindrical ; III-VII 

 small and oblong; VIII quadrate; IX obconical; X subquadrate; 

 XI large, ovate, acuminate 3 



3. Metasternum unmodified, hardly depressed; last sternite widely exca- 



vated, and ogival in shape (in the form of a pointed arch) ; 1.6 



mm. long estebanensis Male 



Metasternum similarly unmodified; last sternite transverse, medianly 



with an obsolete fovea, apex sinuate; 1.6 mm. long 



estebanensis Female 



estebanensis (Raffray). 1890. Venezuela and Brazil. (Bryaxis) 

 irrita Raffray. 1904. Mexico. 

 luteola Raffray. 1904, Mexico. 



